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Centaurea solstitialis, a dicot, is an annual herb that is not native to California; it was introduced from elsewhere and naturalized in the wild [Lum/Walker]. 
The California Invasive Plant Council
(Cal-IPC)
lists plants that cause serious problems in native ecosystems.
In the 2006 list,
Cal-IPC classifies the statewide impact of
Centaurea solstitialis as high
(plant profile).
Centaurea solstitialis is also classified by the California Department of Food and Agriculture as a Noxious Weed List C: Control required in nurseries, not required elsewhere. [CDFA Weeds 2000] |
